Espresso machine



FIG. 1 is a left, front and top perspective view of an espresso machine showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof; and

FIG. 7 is a bottom plan view thereof.

The broken line showing of an electrical cord portion in FIGS. 1-3 and 5-7 are environmental only and forms no part of the claimed design. 

The ornamental design for an espresso machine, as shown and described. 